Editor slowdown on Mac after ballon tip appers

[isaacyeaton]

Description

What steps will reproduce the problem?

1. np.a [Tab] in the editor window
2. ballon tip(?) appears with possible completions

What is the expected output? What do you see instead?
The editor should not slow down and affect typing speed.

Please provide any additional information below
There seems to be no way to disable this ballon tip from appearing. I have disabled the checkbox in both Editor -> Code Introspection/Analysis -> Introspection and in Console -> Introspection -> Source code.

Version and main components

• Spyder Version: 2.3.7
• Python Version: 2.7.10
• Qt Versions: 4.8.7, PyQt4 (API v2) 4.11.4 on Darwin

Optional dependencies

pyflakes >=0.5.0   :  1.0.0 (OK)
pep8 >=0.6         :  1.6.2 (OK)
pygments >=1.6     :  2.0.2 (OK)
IPython >=1.0      :  4.0.0 (OK)
zmq >=2.1.11       :  14.7.0 (OK)
qtconsole >=4.0    :  4.1.0 (OK)
pandas >=0.13.1    :  0.16.2 (OK)
sphinx >=0.6.6     :  1.3.1 (OK)
psutil >=0.3       :  3.2.2 (OK)
rope >=0.9.2       :  0.10.2 (OK)
jedi >=0.8.1;<0.9.0:  None (NOK)
matplotlib >=1.0   :  1.4.3 (OK)
sympy >=0.7.3      :  0.7.6 (OK)
pylint >=0.25      :  None (NOK)

[nbara]

Slowdown also occurs simply when opening an existing *.py file from File Explorer.

[nbara]

Is this the same issue as #2817 ?

[isaacyeaton]

Probably. I had this issue in Yosemite as well, but Spyder is still usable for me with the lagging cursor.

[ccordoba12]

Closing as a duplicate of #2817.